Submitted on: 12 August 2005.
Revised on: 16 September 2005.
Accepted on: 31 October 2005.
___________________Humanities & Social Sciences Communications
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Submitted on: 09 August 2012.
Revised on: 13 November 2012.
Accepted on: 05 January 2013.
___________________Humanities & Social Sciences Communications
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Submitted on: 04 July 2022.
Revised on: 20 September 2022.
Accepted on: 27 October 2022.
___________________Humanities & Social Sciences Communications
Submitted on: 10 October 1998.
Revised on: 03 November 1998.
Accepted on: 06 December 1998.
___________________Humanities & Social Sciences Communications
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Submitted on: 03 November 2018.
Revised on: 01 February 2019.
Accepted on: 19 February 2019.
___________________Humanities & Social Sciences Communications
Submitted on: 16 September 2016.
Revised on: 08 January 2017.
Accepted on: 30 January 2017.
___________________Humanities & Social Sciences Communications